Boat-propelling apparatus.



y PATENTED MAY 26 1908.

J. EQGARROLL. BOAT PROPBLLING APPARATUS.

APPLIOATION FILED NOV. 5,`1,9Q1.-

Wi 11 een@ fQ/@M UNrrnD srArEs' PATENT onnron. i

i JOHN E.l CAEROLL, OF PHILADELPHIA, PENNSYLVANIA., ASSIGNOR TV-O C O2 DEVELOPMENT i COMPANY, OF PHILADELPHIA, PENNSYLVANIA.

To all whom 'it may, concern: y

1 1 noa'r-rnornnmne ArPARATUs.

No. assess.

p Specification fLetter's Patent.

y Patented may 26, 15908.

i Application led November 5, 1907. Serial No. 400,795.

Beit known that I, JOHN E. Cannon, a

citizen `of` the United States, residing at Philadelphia, in the county of Philadelphia have invented a A paratus, of which the following 1s a specication, reference being had therein to the accomplenying drawing. A.

T invention relates to propelling apparatus for boats the object in view being to provide in connection with an engine driven y carboniol acid gas or gas of 4a similarnature means'nactuated by said engine for propelling the boat and at the same time roducing a lifting action on the hull of the goat so that the actual displacementr and wetted surface of the hull, while in motion, will be materially reduced, and whereby the power developed 1n otier and at a suitable distance apart.

by the engine will drivethe hull alon at a comparatively high speed, as compare with a boat inl which no provision is made forvliftinghe hull as-it is propelled.

ithl the' above and other objects in view the nature of which will more-fully appear as the description roceeds, the invention consists in the nove construction, combination and arrangement of parts as hereinafter fully described, illustrated and claimed.

.In the accompanying drawings :-Figure 1 is a side elevation of a boat havin the impgroved propellin apparatus applie thereto.

ig. 2 is a side e evation fthesame partly broken away in section. lFig. 3 is astern elevation of the boat, and Fig 4 is a' vertical cross section through the same. f

The hull o f the boat above the water line may be of any usual or preferred t e and is indicated at 1 in the drawings. Ty-Jglder the preferred embodiment of this `invention twin shafts 2 and 3 are provided, the same extendlengthwise of the boat, parallelto eaxh t their rear ends each of said shafts is provided with a propeller 9 and the shafts may be geared to run either in the same or inopposite directions, referably the latter. At their forward en s the shafts are coupled to one or more engines or motors indicated at 4 and 5. Preferably two of such engines or motors are employed, one for each shaft, the said engines being sup lied with gas from any suitable number of cy nders or tanks 6 and 7, placed at any convenient point or points in.

' manner,

long s aft '2 or 3, as the case may be.

the shafts pass;l

the boat, as shown. Each engine shaft is also shown as providedwith a fly wheel 8.

The propellers 9 at. the rear ends of the shafts 2 and 3 are placed directly'upon said shafts and driven directly thereby in the usual but in addition tothe vpropellers 9 which are used for driving the boat len thwise, I employ series of auxiliary rope ers 10, two of such series being uti series on each side of the vessel, as indicated in Figs. 1, 2 and 3. 'The pro ellers 10,0perate both to drive the boat' engthwise and also to elevateor raise the hull of the boat and for this purpose the shafts 11- of each and all of the lifting pro ellers are set at a considerable angle'to the Ihorizon-tal as clearly shown in Figs. 1 and 2. with a'gear wheel 12 which meshes with aA corres onding gear'w eel 13 on the adjacent y All of the side shafts 11 are Ithus geared to the two main shafts 2 and 3 andin this way motion `zed, one

Each shaft 11 is provided is simultaneously transmitted to all of the propellers, any number of which may be employed accordingto the size of the boat and' Y the speed required. A

In order to properly house in the shafts of the side o r lifting propellers,

a number of depending wedge .s aped offsets 14 lwhich are cored out' to receive the' shafts 11 and provided-with stufiing boxes 15 In addition to the bearing afforded by the stuffing in a bearing 16, securedwithinthe hullof the boat in any approved manner and said bearing 16 maybe of suoli shape as to form also a bearing 17 for the main shaft with which the auxiliary shaft is connected and by which it is driven, as shown in Fig. 2.

at the rear, through which box, each of the side 'shafts may be supported at'its forward end ythe hullA of f the While each engine is an independent motor, it is preferredl shafts to ether-.or f this may e accomp ished, as shown inFig. 4, in which it will be seen that one or more intermediatetransmission gears are interposed between the twin shafts so as to mesh .with Wheels or pinions 18 on said shafts, 19 designating such interposed gear wheels. lAny suitable shifting device` may be used for shifting the intermediate gear wheels into and out of mesh with -the wheels 18 on the shafts 2 and 3. In this way, should one of to gear the two motor, rovlde means by whichr the englin cou be coup ed together s'o as to b e""actu ated by the one engine and thus all of thev propellerswould be driven, notwithstanding the fact that one motor Was outl of use.

, The 'number ofengines or motors may be varied at will and likewise the number of proiary I shaft, .a

pellers, stern and side or lifting, according-t0. requirements, Without departing from the prmclple or sacrlficing any of theadvantages of the mvention.

I claim 1 prisin a fore. and aft motor driven-shaft; a propel er mounted thereon, inclined auXild shafts-geared to said motor driven shaft at intervals in the length thereof, 'and pro- Apellers on said auxiliary shafts.

2 Propelling apparatus-for boats comprising a mam shaft, a motor for actuating said ropeller driven directlyby lsaid shaft, and) auxiliary shafts set at an inclination to the direction of movement of the-boat lcombination with lprismg amain sha t, a propeller driven therel ceases l and geared tothe main shaft and provided vwith propellers which act to elevate the boat as it 1s driven lengthwise.

-3. A boat hull provided with depending inclined offsets valong the bottom thereof, in

r'opelling apparatus comy, .auxiliary shafts-mounted at an .inclination in the said offsets and iary shafts.

.4. Propellingapparatus for boats comprising twin shafts, a` motor for each of said ,1. Propellmg mechanism Vionboats,l corn-` In testimony whereof I aflix my signature vin presence of two- Witnesses.

.. JOHN E. CARROLL.

. Witnesses:

Cms. OELSCHLAGER, JOE C. RoDEL.

geared to the main Ashafta11d propellers on said-inclined auxil- 

